Patent AU-2020289853-B2 (AU)
Title: Matching method and apparatus, electronic device, computer-readable storage medium, and computer program
Inventor: CHEN KAIGE
IPC: G06V10/48
Filed: 2020-09-09
Granted: 2022-02-03
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) 
(19) World Intellectual Property 
(1) Organization11111111111111111111111I1111111111111i1111liiiii 
International Bureau (10) International Publication Number 
(43) International Publication Date W O 2021/205219 Al 
14 October 2021 (14.10.2021) W IPO I PCT 
(51) InternationalPatent Classification: (81) Designated States (unless otherwise indicated, for every 
G06K 9/62 (2006.01) G06T 7/00 (2017.01) kind of national protection available): AE, AG, AL, AM, 
G06K 9/46 (2006.01) AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, 
CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, 
(21)InternationalApplicationNumber: DZ, EC, EE, EG, ES, Fl, GB, GD, GE, GH, GM, GT, HN, PCT/IB2020/058349 HR, HU, ID, IL, IN, IR, IS, IT, JO, JP, KE, KG, KH, KN, 
(22) International Filing Date: KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, 
09 September 2020 (09.09.2020) ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, 
NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, 
(25)FilingLanguage: English SA, SC, SD, SE, SG, SK, SL, ST, SV SY, TH, TJ, TM, TN, 
(26) Publication Language: English TR, TT, TZ, UA, UG, US, UZ, VC, VN, WS, ZA, ZM, ZW.  
(30) Priority Data: (84) Designated States (unless otherwise indicated, for every 
10202003292X 09 April 2020 (09.04.2020) SG kind of regional protection available): ARIPO (BW, GH, 
GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, 
(71)Applicant: SENSETIME INTERNATIONAL PTE. UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, 
LTD. [SG/SG]; 7500A Beach Road, #05-318, The Plaza, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, 
Singapore, Singapore 199591 (SG). EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, 
(72) Inventors: CHEN, Kaige; 7500A Beach Road, #05-318, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, 
The Plaza, Singapore, Singapore 199591 (SG). WU, Lue; TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, 
7500A Beach Road, #05-318, The Plaza, Singapore, Singa- KM, ML, MR, NE, SN, TD, TG).  
pore 199591 (SG). YI, Shuai; 7500A BeachRoad, #05-318, 
The Plaza, Singapore, Singapore 199591 (SG).  
(54) Title: MATCHING METHOD AND APPARATUS, ELECTRONIC DEVICE, COMPUTER-READABLE STORAGE 
MEDIUM, AND COMPUTER PROGRAM 
slol 
Obtain a to-be-matched image 
S102 
Extract at least one to-be-matched feature point from the to be-matched image 
For one of at least one reference image, perform matching between the at leas one to-be
matched feature point andat least one reference feature point extracted from thereference S103 
image to obtaina distanceset corresponding to the reference inage, the distanceiset 
correpndingto the reference image being a distance set composed of distanceslbetween 
die at least one to-be-matched feature point and the at least one reference feature Point, the 
onereference image including an image of a standard sample, and different rrernce 
images including different standard samples 
Determine, based on the at least one distance set, whether a to-be-matched image frame S04 
matches at least one reference image frame 
FIG. 2 
(57) Abstract: Provided are a matching method and apparatus, an electronic device, and a computer-readable storage medium. The 
method includes: obtaining a to-be-matched image; extracting at least one to-be-matched feature point from the to-be-matched image; 
I for one of at least one reference image, performing matching between the at least one to-be-matched feature point and at least one 
reference feature point extracted from the reference image to obtain a distance set corresponding to the reference image, the distance set 
corresponding to the reference image being a distance set composed of distances between the at least one to-be-matched feature point 
and the at least one reference feature point, the one reference image including an image of a standard sample, and different reference 
images including different standard samples; and determining, based on the distance set corresponding to each reference image, whether 
CAthe to-be-matched image matches each reference image.
WO 2021/205219 A291|||||||||||||||||||||||||||||||||||H|||||||||||||11111|||HI||||||||||||||||||||||||||||| 
Published: 
- with international search report (Art. 21(3)) 
- in black and white; the international application as filed 
contained color or greyscale and is availablefor download 
from PATENTSCOPE